<template>
  <label class="hm-radio" :class="{'is-checked':label === model}">
    <span class="hm-radio__input">
      <span class="hm-radio__inner"></span>
      <input
        class="hm-radio__original"
        type="radio"
        :value="label"
        :name="name"
        @input="handleModel"
      >
      
         <!-- v-model="model"  -->
    </span>
    <span class="hm-radio__label">
      <slot>{{label}}</slot>
    </span>
  </label>
</template>
<script>
export default {
   name:"hmRadio",
   props:{
       label:{
        type:[String,Number,Boolean],
        default:''
       },
       value:null,
       name:{
           type:String,
           default:''
       }
   },
    inject: {
        RadioGroup: {
            default: ''
        }
    },
   created() {
       console.log(this.RadioGroup)
   },
  computed:{
       model:{
           get() {
             return  this.isGroup ? this.RadioGroup.value : this.value
           },
           set(value){
             //触发父组件的input事件
             this.$emit('input',value)
             this.isGroup ? this.RadioGroup.$emit('input',value) : this.$emit('input',value)
           }
       },
       isGroup(){
          //用于判断radio是否被radioGroup所包裹  !!转为boolean值
          return !!this.RadioGroup
       }
  },
  methods: {
      handleModel(e){
          console.log(e.target.value)
        this.model = e.target.value
      }
  },
}
</script>

<style lang="scss">
   .hm-radio {
  color: #606266;
  font-weight: 500;
  line-height: 1;
  position: relative;
  cursor: pointer;
  display: inline-block;
  white-space: nowrap;
  outline: none;
  font-size: 14px;
  margin-right: 30px;
  -moz-user-select: none;
  -webkit-user-select: none;
  -ms-user-select: none;
  .hm-radio__input {
    white-space: nowrap;
    cursor: pointer;
    outline: none;
    display: inline-block;
    line-height: 1;
    position: relative;
    vertical-align: middle;
    .hm-radio__inner {
      border: 1px solid #dcdfe6;
      border-radius: 100%;
      width: 14px;
      height: 14px;
      background-color: #fff;
      position: relative;
      cursor: pointer;
      display: inline-block;
      box-sizing: border-box;
      &:after {
        width: 4px;
        height: 4px;
        border-radius: 100%;
        background-color: #fff;
        content: "";
        position: absolute;
        left: 50%;
        top: 50%;
        transform: translate(-50%,-50%) scale(0);
        transition: transform .15s ease-in;
      }
    }
    .hm-radio__original {
      opacity: 0;
      outline: none;
      position: absolute;
      z-index: -1;
      top: 0;
      left: 0px;
      right: 0;
      bottom: 0;
      margin: 0;
    }
  }
  .hm-radio__label {
    font-size: 14px;
    padding-left: 10px;
  }
}

.hm-radio.is-checked {
  .hm-radio__input {
    .hm-radio__inner {
      border-color: #409eff;
      background: #409eff;
      &:after {
        transform: translate(-50%,-50%) scale(1);
      }
    }
  }
  .hm-radio__label {
    color: #409eff;
  }
}
</style>